Weather Alert in Colorado

Recent Locations: Ellsworth, OH   Pinola, MS   Cañon City, CO  

Air Quality Alert issued August 10 at 4:10PM MDT by NWS Grand Junction CO

AREAS AFFECTED: Pitkin, CO; Gunnison, CO; Rio Blanco, CO; Eagle, CO; Garfield, CO

DESCRIPTION: The Colorado Department of Public Health and Environment has issued the following... WHAT...Air Quality Health Advisory for Wildfire Smoke. WHERE...Gilpin, Clear Creek, Lake, Rio Blanco, Eagle, Summit, Garfield, Pitkin, Gunnison and Grand Counties. Locations include, but are not limited to Central City, Georgetown, Leadville, Meeker, Rangely, Eagle, Vail, Breckenridge, Glenwood Springs, Aspen, Gunnison, Granby, Hot Sulphur Springs and Kremmling. WHEN...900 AM Sunday August 10 to 900 AM Monday August 11 IMPACTS...Smoke from large wildfires in Rio Blanco is impacting a large area of central Colorado. Periods of moderate to heavy smoke are possible throughout the advisory area on Sunday and Monday. HEALTH INFORMATION...There was a problem with the request.

INSTRUCTION: N/A

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Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Cirrus Clouds Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Contrails Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

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